Slaunger C++: No need for floats
int main() { uint32_t a, b; cin >> b >> a; cout << 2 * a / b + bool((2 * a) % b); return 0; }
Himanshu98 nice approach simple and straight forward. Thanks
Valleri Can you explain that? What does bool constructor does?
diego_gonzales Returns true or false, which in this case adds either 1 or 0.
Valleri Thank you, that makes sense.
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D_R_4041 why you add bool((2*a)%b); ?????
kiamottullah Returns true or false, which in this case adds either 1 or 0
joshi_niraj1996 Instead of having overload of calculating bool part, you can subtract 1 from numerator and add 1 to result like this:
cout << (2 * a - 1) / b + 1;
yasaswinkumar but y can u explain me the logic behind it
prathameshbagek1 This works too
int main() { int b, a; cin >> b >> a; cout << (long)(2.0 * a / b); return 0; }
PranavBansal You can use ceil for it.
arshuoffl Yeah!
return ceil((2 * area)/(float)base);CodeAnkit18 why was (float) been used?
arshuoffl Because base is int and (int/int) will result in integer according to internal typecast in C++ , so we should typecast denominator to float to get the answer (i.e) (int/float) = float
CodeAnkit18 thanks!
Chitransh22 Test Case 3 still fails tho
plague187x2 In the C# stub, base is a keyword and can't be used as a variable.
gnemlock You will also need to use casts for the simple mathematics behind this (hint: you will need to work with floating decimals, but return an integer)
raguila8 [deleted]
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rk513 height = (int)Math.ceil((2.0*area)/base);
AnnaPixie exactly what I came up with :)
notcontiguous Why it's working with 2.0 but not 2 ?
rrarifur774 i did the same but didn't work
gauriawasthibha1 It really won't as some decimals round to the whole part itself rather than jumping to the next whole number.
abhi_anuj100 try this: retrun ceil(2*area/(float)base); the conversion to float is necessary so that ceil will have some effect. the above code works for c++; but will not work for javascript and simillar languages since it does not have float data type.
arzunusa when you add 2.0 it treats as double and gives exact number with proper decimals
abhi_anuj100 because ceil needs a floating point number and if you use 2 then 2*area/base will return an integer which will ignore decimal places. while 2.0*area/base will return a floating point number which is then handled by ceil.
nikhil_kumar0901 It is so because the if ‘2’ is used instead of ‘2.0’ and the argument is passed as parameter in Math.ceil() function, the parameter doesn’t get converted into a floating point implicitly. Let’s consider by taking an example: If least area ‘area’ is 100 and base ‘base’ is 17, then 1. int i = (int)Math.ceil(2 * area / base); = (int)Math.ceil(2 * 100 / 17); = (int)Math.ceil(200 / 17); = (intMath.ceil(11); = (int)11.0; = 11; In this case, i = 11, which is wrong. 1. int i = (int)Math.ceil(2.0 * area / base); = (int)Math.ceil(2.0 * 100 / 17); = (int)Math.ceil(200.0 / 17); = (int)Math.ceil(11.764705882352942); = (int)12.0; = 12; In this case, i = 12, which is correct.
sarvani_phd2017 ceil((2.0*area)/base);
jongod5399 I am so mad. One of the test cases' answer was 2000000 and C++ std::cout gave the output as 2e+06 instead of 2000000 so it gave a wrong answer... I really need to start using std::printf everywhere.
qwrtyuiuytres explicitly type cast into int
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